Home / 12,187.13-18,280.69-2,953.13

Finding the Fourth Proportional to 12,187.13, 18,280.69 and 2,953.13

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Solution

The fourth proportional to 12,187.13, 18,280.69 and 2,953.13 is: 4,429.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.13 : 18,280.69 = 2,953.13 : x
  2. Step 2: Convert to fraction form
    12,187.13/18,280.69 = 2,953.13/x
  3. Step 3: Cross multiply
    12,187.13x = 18,280.69 × 2,953.13
  4. Step 4: Simplify right side
    12,187.13x = 53,985,155.27
  5. Step 5: Solve for x
    x = 53,985,155.27/12,187.13
  6. Step 6: Final answer
    x = 4,429.69

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.